[TowerTalk] Remote switch

[Kim Elmore]

I’m a bit puzzled by the need for lots of isolation in such a switch. I understand why it’s needed between different transceivers, but how much is truly needed between antennas to the *same* transceiver? How much isolation exists between the antennas themselves, regardless of the switch? As an example, how much isolation is there between my 20 m tribander and my dipole for 17 m, all on the same mast? It’s got to be much less that across the ports of the RCS-4, doesn’t it?

Kim N5OP 

"People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith

> On Oct 23, 2019, at 9:20 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> On 10/23/2019 7:12 PM, David Gilbert wrote:
>> I'd build my own remote switch with input and output relays for each channel before I'd buy the RCS-4.
> 
> The 4O3A switching units are excellent. I measured the isolation of the most expensive, the 8x2 Antenna Genius, at better than 100 dB! The lower cost 6x2 measured better than 75dB. The Array Solutions Six Pak came in at about 55 dB.
> 
> 73, Jim K9YC
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk